1. Upper esophageal sphincter opening and modulation during swallowing;Jacob;Gastroenterology,1989
2. Volitional augmentation of upper esophageal sphincter opening during swallowing;Kahrilas;Am J Physiol,1991
3. Closure mechanisms of the laryngeal vestibule during swallow;Logemann;Am J Physiol,1992
4. Upper esophageal sphincter function during deglutition;Kahrilas;Gastroenterology,1988
5. Opening mechanism of the human upper esophageal sphincter;Cook;Am J Physiol,1989